On 17 June, Trump signed a memorandum of understanding with Iran at Versailles, Pakistan mediating and Pezeshkian signing remotely. It extends April's ceasefire by 60 days, reopens Hormuz to toll-free passage, lifts the US naval blockade, waives sanctions, and pledges 300 billion dollars in reconstruction. Every hard question, from uranium enrichment to Iran's proxy network and a permanent nuclear regime, is deferred to talks that have already slipped.

On 18 June, Ukraine launched the largest drone assault on Moscow of the full-scale war, striking a major oil refinery, injuring 17, and grounding every Moscow airport. The operation deepens Kyiv's strategy of degrading the refining and export capacity that finances Russia's war, a shift from front line attrition toward economic coercion. In Washington, the House passed a Russia sanctions and Ukraine aid bill in bipartisan rebuke of Trump, though the Senate is unlikely to take it up.

Sudan's paramilitary Rapid Support Forces are massing thousands of fighters to storm el-Obeid, the city that controls the routes between the country's center and its west. On 20 June the UN Security Council warned of an imminent risk of mass atrocities, with around 500,000 civilians trapped and aid agencies fearing a repeat of last year's el-Fasher massacre, where more than 6,000 people were killed in three days in what the UN called a hallmark of genocide. The offensive is powered by drones and armored vehicles that Sudan says the United Arab Emirates supplies through Chad and Libya, in a war that has now uprooted some 14 million people and pushed roughly 40 percent of the population into acute hunger.

The UN's mid-year climate negotiations in Bonn (SB64) closed around 18 June with little to show, as delegates described eroding trust in the process amid a new geopolitical landscape and the absence of the United States. Finance was again the fault line, with developed countries declining to pledge new money against the 300 billion dollar annual goal while developing states pressed Paris Article 9 obligations and a 1.3 trillion dollar need. A just transition package was forwarded to COP31 in Antalya, but the headline was multilateral drift.

Breaking on publication day, 22 June, just outside this week's review window: Keir Starmer announced his resignation as Labour leader and prime minister, opening the way to Britain's seventh leader in ten years. The trigger was Andy Burnham's emphatic 18 June by-election win, which cleared the last obstacle to a challenge, on top of months of party revolt, local election losses, and ministerial departures. For an IR readership the weight is less the domestic churn than the instability of a G7 and NATO power during the war in Ukraine, after the Trump relationship soured over Britain's distance from the Iran campaign.